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Dr. Steven J Triantafyllou, MD

Orthopaedic Surgery Physician in York, PA · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1831197730

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Registry record

Entity type Individual (Type 1)
Name Dr. Steven J Triantafyllou
Credential MD
Sex Male
Practice address 1855 Powder Mill Rd, York, PA, 17402
Phone (717) 848-4800
Fax (717) 741-9867
Enumeration date Jul 13, 2005
Last updated in NPPES May 22, 2019

Taxonomy & licenses

207XS0117X Orthopaedic Surgery of the Spine Physician Allopathic & Osteopathic Physicians · License MD036224E (PA) Secondary
207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License MD036224E (PA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Steven Triantafyllou's NPI record?
Cross-check NPI 1831197730 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1831197730 active?
Yes, as of the latest NPPES snapshot, NPI 1831197730 is active (record last updated 2019-05-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-22.